Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement Nos. 33-55285, 33-57801, 333-21867, 333-24955, 333-26621, and 333-185162 on FormS-3  and Registration Statement Nos. 33-57375, 333-00709, 333-01183, 333-38299, 333-41903, 333-41476, 333-41478, 333-48482, 333-74216, 333-151884, 333-151887, 333-166767, 333-166768, 333-191614 and 333-196262 on FormS-8 of our reports dated February 23, 2015, relating to the consolidated financial statements and financial statement schedule of Tenet Healthcare Corporation and subsidiaries, and the effectiveness of Tenet Healthcare Corporation and subsidiaries’ internal control over financial reporting, appearing in this Annual Report on Form10-K of Tenet Healthcare Corporation for the year ended December31, 2014.

We consent to the incorporation We consent to the incorporation

/s/ Deloitte& Touche LLP

Dallas, Texas

February23, 2015